Swordfish

I suspect the 10k resistor to pin \MCLR

I'm using 10k on MCLR for years with out any problems. I don't think that's your problem.
Check pin 2,3 for 5V. I always use external power. I don't trust USB power for programming.

Why don't you start PICit2 manually. Pick the right chip and load the .hex file.
Now you can do ERASE, BLANK check and WRITE to see what's going on.

As far as I am aware the USB interface is just an FTDI FT232 uart bridge and should show up as a standard com port , so pretty much any bootloader should work ok. The ICSP is brought out on a header (spaced for pickit 2/3 but any will work) so slapping another loader of is simple enough. Raistlin i...

You'll probably find David is working for Les these days.

Yup.. that's correct. He just finished a new IDE and Bootloader for the Amicus18 board.

What's the Ilcd current in your display with the best contrast??

I don't know. I've never measured it. I would guess a few mA.

Displaytech has a support forum. You should ask them for advise.
I don't have any more ideas...

FYI:



Uploaded with ImageShack.us

Vo is not a constant value out?? Vee is not an variable IN? May be your data sheet is incorrect? Vee is always an output, which you can measure w/out connecting anything. It should be a negative (!) voltage of approx. -25 to -28V. Vo should show 0V with no connection. On my displays, the average Vo...

Thanks for your answer, I have checked many times the voltage at Vee: It's between +27,5V and +5V and nothing changes in the screen... The cap between Vdd-Vss is already in. I don´t have MCLR pin enabled...(I guest is not important....) :shock: What are PS pins?? (Power-Gnd pins??) I'm going to che...

With your pot connection, you should be able to change the voltage at Vee between +5V and -27.5V. You can verify that by using a multimeter. If the voltage is not changing at all then your display is shot :oops: Your PIC should have at least some 100nF caps over the PS pins and a 10k pull-up resisto...

The SE version compiles your program w/out any problems. I just tried it myself.
What OS are you running? I would suggest to remove SF and re-install it.
It should install in to "Program Files/Mecanique/SwordfishSE".

Are you using a 20MHz crystal/resonator? If yes, you have to add after clock Also add before Cls(1)
; requires to include "Utils.bas"

Regarding the backlight, see my comment here on first page.

Matt

Is it somehow 'locked' to Amicus and/or Amicus hardware? I don't think so because it is based on the "Tiny bootloader" (open source). http://www.etc.ugal.ro/cchiculita/software/picbootloader.htm You should be able to use the Tiny Bootloader by just changing/adding these lines: radix DEC LIST P=18F2...

Francis wrote:Are there any bootloaders around for 18F25K20?

May be the Amicus18 Bootloader works for you. It's available somewhere here:

http://www.myamicus.co.uk/content.php?2 ... d-Firmware

It works !!! Thanks a lot man!!

Good job!
Next time if I visit my home town (Hamm-Westfalen) you can buy me a beer